AGRICULTURE WITH CHEMISTRY. 



he should procure the following articles and ves- 

 sels : 



Two se*s of small scales and weights, one to weigh a few 

 pounds at a time, and another smaller and more accurate, 

 for ounces and grains : some porcelaine glass, or stone- 

 ware vessels ungiazea, such as are called Vajixhall ware : 

 some muriatic acid, and mineral alkaline salt. These being 

 provided,^:he method of proceeding to ascertain the dif- 

 ferent proportions of the different substances in soils, is 

 as follows : 



The presence of calcareous mattter is ascertained, by 

 applying to the mould suspected to contain it, some 

 marine acid diluted with water. If it contain calcareous 

 matter^ an effervescence will take place, and a neutral salt, 

 called muriat of lime, will be formed. This is to be sepa- 

 jated from the earthy insoluble matter, by a due propor- 

 tion of water, and is to be evaporated to a certain degree. 

 Lastly, the calcareous matter is to be precipitated by mild 

 mineral alkaline salt. When the calcareous matter thus 

 precipitated shall be collected, washed, dryed, and weighed, 

 the quantity contained in the soil will be ascertained by 



u the 



